ISO INTERNATIONAL STANDARD 27850 First edition 2013-05-01 Tractors for agriculture and forestry Falling object protective structures Test procedures and performance requirements Tracteurs agricoles etforestiersStructuresdeprotection contre les chutes d'objets - Modes opératoires d'essai et exigences de performance Reference number ISO 27850:2013(E) LSO IS02013 Not for Resale IS0 27850:2013(E) COPYRIGHTPROTECTEDDOCUMENT ISO2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2013 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 27850:2013(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions ..1 4 Permissible measurement tolerances ..2 5 Procedure .2 5.1 Preparation of tractor and FOPS for testing .2 5.2 Apparatus and procedure ..4 6 Performance requirements ..8 7 Cold weather performance of protective structures ..8 8 Labelling. .8 9 Test report. .9 Annex A (normative) Optional requirements for providing resistance to brittle fracture of falling- object protective structures (FoPs) at reduced operation temperature .10 Annex B (normative) Test report for falling-object protective structures (FoPs) ..12 Annex C (informative) Designation of Maintenance Agency ..16 Bibliography .17 iii Stal se with I ut license from IHS Not for Resale